Ait Austrian Institute of Technology Gmbh

Seibersdorf Labor Gmbh

Siebersdorf Labor Gmbh

Otmar Putz

Gernot Schmid

Manfred Bammer

A medication injector for dispensing liquid medications to people includes a container which is filled with the liquid and which has an opening at one end for dispensing the liquid and at least one pair of capacitive measuring electrodes disposed opposite each other in the outer region of the container, in particular on the wall, for determining the permittivity of the respective medium in the intermediate region between the measuring electrodes. The measuring electrodes are used by the injector to determine the fill level of the container. A shielding surrounds the measuring electrodes in the manner of a sheath, is disposed around the container, and reduces possible external interfering influences on the capacitive measurement, such as those resulting from contact, for example. Additionally, a contact sensor is provided which can indicate the measurement as invalid.

Medication injector with capacitive fill level measurement capacity, and contact sensor

A dispensing device for dispensing liquids, particularly liquid medications to people, contains a container which is filled with a liquid and which has an opening at one end for dispensing same. The dispensing device further has at least one pair of capacitive measuring electrodes which are arranged in an outer region of the container, particularly on the wall, opposite one another, for determining the permittivity of the respective medium in the intermediate region between the measuring electrodes. A shield is arranged around the container and surrounds the measurement electrodes in a sheath-like manner.

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Bromberg, Austria

Otmar Putz